A257560 First differences of A257559.
2, 3, 5, 7, 12, 13, 16, 20, 24, 27, 28, 33, 41, 43, 45, 48, 51, 56, 57, 62, 65, 69, 71, 76, 77, 82, 84, 86, 87, 88, 91, 92, 93, 96, 97, 103, 105, 106, 114, 116, 118, 125, 133, 135, 137, 140, 143, 147, 149, 155, 158, 162, 165, 167, 172, 176, 177, 183
Offset: 1
Keywords
Links
- Zak Seidov, Table of n, a(n) for n = 1..1000
Crossrefs
Cf. A257559.
Programs
-
PARI
issemi(n)=bigomega(n)==2 t=0; v=List(); last=4; while(1, n=last+t; while(!issemi(n++), ); listput(v, t=n-last); if(v==100, return(Set(v))); last=n) \\ Charles R Greathouse IV, May 01 2015
Comments